Unit testing

[Seanny123]

In a lot of my projects I have to do some data pre-processing or I need to make an environment node, which lends itself well to unit-testing. Would it be useful to cover how to setup unit-testing with pytest?

[Seanny123]

Now that I've made the basic notebook, here's what I need to fix:

• Assert statements can have a string associated to them
• Fixtures arg combinations
• Explain advantage of parameterize over constants, different named tests
• Note the running with --pdb
• Send output in pytest with a command link arg
• The importance of setup.cfg for using the Nengo fixtures (see nengolib for examples)